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Equity Instruments (Details 1) - Restricted Stock [Member]
3 Months Ended
Sep. 30, 2018
$ / shares
shares
Number of Shares  
Unvested, Beginning balance | shares 37,200
Vested | shares (850)
Granted | shares
Cancelled | shares
Unvested, Ending balance | shares 36,350
Weighted Average Grant Date Fair Value  
Unvested | $ / shares $ 39.80
Vested | $ / shares 40.40
Granted | $ / shares
Cancelled | $ / shares
Unvested | $ / shares $ 39.81
Weighted Average Remaining Contractual Life in Years  
Unvested Beginning, Weighted Average Remaining Contractual Life in Years 9 years 4 months 24 days
Unvested Ending, Weighted Average Remaining Contractual Life in Years 9 years 1 month 6 days